Concrete column form clamp



Oct. 6, 1970 F. BRYSON 3,532,335

CONCRETE COLUMN FORM CLAMP Original Filed March 20, 1967 2 Sheets-Sheetl 1NV-ENTOR. FRANK BRYSON ATTORNEY Oct. 6, 1970 F. BRYSON 5 3 5 CONCRETEcomma FORM CLAMP Original Filed March 20, 1967 2 SheetsSheai 2 i YINVENTOR. -,5 U 9 FRANK BRYSON ATTORNEY United States Patent 3,532,335CONCRETE COLUMN FORM CLAMP Frank Bryson, 928 Belle Meade Drive,

Miami, Fla. 33138 Continuation of application Ser. No. 624,604, Mar. 20,1967. This application Sept. 15, 1969, Ser. No. 867,109

Int. Cl. B25b /14 US. Cl. 269-124 ABSTRACT OF THE DISCLOSURE 1 ClaimThis application is a continuation of copending applica' tion Ser. No.624,604 filed Mar. 20, 196-7, now abandoned, by the present inventor.

This invention relates to improvements in clamping means for clampingthe usual wood panels of a concrete form or mold and tightly securingthe walls of the mold to prevent the spreading of the mold during thepouring and setting of the concrete.

Heretofore clamping devices of this general character were comprised ofpairs of bars or straps joined to form component halves which weresecured together about a column form by means of clamps, wedges, pins,bolts and the like. However, such devices fail to afford positive meansfor squaring the form and they are also objectionable because of themultiplicity of separate locking devices required for securing them inposition.

It is an object of the present invention to provide complemental pair ofpermanently squared clamp frames of a character adapted for use and tosecurely clamp the mold during the initial setting up of a form forconcrete columns.

Another object of the invention is to provide novel clamp frames of thecharacter described which are easily assembled around a set up columnform or panels and which interlock quickly and easily without the use ofaccessory locking elements to insure squaring of the form and to providea rigid clamp for retaining said panels assembled and in position.

Still another object of the invention resides in mating pairs of clampframes that embody few parts, are inexpensive to manufacture and easy toassemble and quickly disassemble, are light in weight, may be nested,stacked or packed compactly thus requiring little storage space andwhich, because of their construction have firm fiat surface contact withthe column form walls to prevent wall distortion.

A further object of the invention resides in mating pairs of T-shapedframes with the flanges of each frame being notched upwardly anddownwardly and with the flanges of the frame being relatively wide,presenting a wide clamping engagement with the forms of the mold andwith each of the frames adapted to have fitment into the notches of theflanges.

Another object of the invention resides in the form of the frames,having a relatively wide plate that is bent upon itself at the corners,to form a right angle member, and with the plates receiving metallicstrips intermediate their width that are fixed to the plates by weldingor the like, forming a very desirable clamp that has very desirableclamping area against the column form boards, or the clamp may beintegrally formed by hot rolling.

Novel features of construction and operation of the device will be moreapparent during the course of the following description, reference beinghad to the accompanying drawings wherein has been illustrated apreferred form of the device and wherein like characters of referenceare employed to denote like parts throughout the several figures.

In the drawings:

FIG. 1 is a view illustrating a plurality of the clamps engaged with acolumn form,

FIG. 2 is a perspective view of a pair of clamps,

FIG. 3 is a top plan view of the clamp illustrated in FIG. 2,

FIG. 4 is a side elevation of the clamp illustrated in FIG. 3,

FIG. 5 is a sectional view through the column illustrated in FIG. 1,

FIG. 6 is a similar view but taken through an L-shaped column, and

FIG. 7 is a view similar to FIG. 5, but illustrating the clamped formsupon a T-shaped column.

Referring specifically to the drawings, each form embodies a clampformed of a pair of right angled frames 6 and with the frames 6 beingsubstantially identical and with the plates 5 of the frames being bentat a right angle as at 7 and having their upper and lower edges notchedas at 8.

Fixed to the outer faces of the plates 5 are flat strips 9, welded tothe plates 5 and whereby to hold the clamps in rigid nonflexibleposition and, as shown, one angled frame has its teeth '8 interlockingwith the teeth of the mating clamp. The clamps may be initially fixed tothe form boards, such as driving a nail through stamped openings 10 ofthe plates 5 which in effect permits the installation of the clamps tothe form boards and to hold them in temporary position.

In the use of the device, the clamps are placed against the form boardsat a desired elevation and initially fixed thereto by conventionalcarpenters nails passing through the apertures 10. As illustrated in thedrawings, one clamp illustrated as a whole by the numeral A is fittedaround the form boards of the column form and with an upper clamp Ashifted downwardly so that the lower marginal edge of the plate 5 willcause its notches to engage into the notches of the lower clamp.

FIG. 5 illustrates the application of the frames around the wood columnform board 11. With all of the clamps fixed to the column B, as in FIG.1 the column can then be poured with concrete or the like and the clampsWill securely hold the form against spreading.

In FIG. 6, the frames are fitted around the form boards 11 in anL-shaped column and in FIG. 7, the clamps are fitted into the corners ofthe T-shaped column.

It will be apparent from the foregoing that a novel type clamp has beenprovided. The relatively wide plates 5 permit of a wide clamping actionagainst the form boards and the teeth 8 both upper and lower on theplate 5 greatly extends the useful application of the clamps to the formboards. The clamps are simple in construction, cheap to manufacture andmost effective for securing clamping engagement about the form boards ofa concrete form.

It is to be understood that the invention is not limited to the preciseconstruction shown, but that changes are contemplated as readily fallwithin the scope of the subjoined claim.

I claim:

1. A clamp of the character described for clamping engagement with theform boards of a concrete column form, the clamp including a pair ofL-shaped frames to embrace the outer sides of the form, each saidL-shaped frame being formed of a relatively wide plate of metal cut instrip form and bent upon itself at a right angle intermediate its endsand having upper and lower marginal edges, the plates being reinforcedupon their outer surfaces by a metallic strip that is Welded to theouter faces of the plate to give the frame a T-shaped section, the upperand lower marginal edges of the plates being provided with notches fortheir major length and with the notches o forming teeth, the teeth ofone frame adapted to have interlocking engagement with the teeth of anadjacent frame.

References Cited UNITED STATES PATENTS 6/1959 Olson. 10/1969 Knorr269-124 ROBERT C. RIORDON, Primary Examiner D. D. EVENSON, AssistantExaminer

